Diversity and dispersal - can the link be approached experimentally?

摘要: It has been hypothesized that the relative role of species dispersal in determining plant community composition and richness changes along primary productivity disturbance intensity gradients. Manipulative experiments with either diaspore addition or prevention are needed to validate this hypothesis. Due methodological constraints, rarely used. In case experiments, there some potential sources error. (1) Experiments may be confounded since patchiness microbial communities is not considered techniques equalizing over study plots (2) The length period observation sufficient understand whether establishment sown individuals was really successful. (3) effect sowing treatment theoretical context whole experiment depends on number identity sown. When addressing long-distance dispersal, it almost impossible say what appropriate used for should be. (4) Until now, most attention space, while “dispersal time” (seed bank) addressed. We conclude stepwise accumulation experimental studies, shaping communities, will sooner later reveal general patterns, given well planned aim avoid errors described above.